Simons Foundation: Targeted Grants to Institutes in the mathematics and physical sciences

The program is intended to support institutions in the mathematics and physical sciences through funding to centers of excellence, to help establish scientific culture and strengthen contacts within the international scientific community. Funding: $100,000 to $200,000 per year for a 3-5 year period.
http://www.simonsfoundation.org/funding/funding-opportunities/mathematics-physical-sciences/targeted-grants-to-institutes/